H & M sizing or am i fat ??

Ok so i know i need to loose some ,, but just not sure if these sizes are true im 5'2 and 10 stone 7 ( need to loose 1 stone) with a 32g bust,, Should a 12 fit?? i have just brought items from H & M and nothing fits nice should i be bothered.. Please be nice

H&M comes up tiny in my experience - jeans especially. I was really pissed off when I bought some of their maternity tights in a large when I was about 5 months preg last year, and they were so tight and unstretchy I couldn't get them past my calves & was completely knackered & out of breath from the effort! I was a size 10-12 everywhere else at the time

I think H&M sizing is quite small. I don't buy their clothes normally, but bought some maternity items, I am 5ft 6 and around 11 stone and normally fit size 14. In H&M I had to by the XL maternity stuff.